Seiko Cal. 4540 - 548

The Seiko 4540-548 represents an important milestone in Seiko's 1981 lineup. It features a White dial protected by a Hardlex crystal and offers 70m of water resistance. [seikata-wm-1c530175a16b]

Also known as: UFO

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

42mm

Case Thickness

13.2mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

70m

Dial Color

White

Jewels

21j

Frequency

21,600 bph

Power Reserve

57 hours

Year

1981

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